JP3148336U - Dust prevention flag hinge - Google Patents

Abstract

[Problem] To provide a metal flag hinge with high practical value that can suppress the generation of metal dust over a long period of time and can be easily manufactured at low cost. A metal first plate-like member having an upper bearing portion formed on one side, a lower bearing portion formed on one side, and a cylindrical shape in the lower bearing portion. The lower part of the shaft has a metal second plate-like member inserted and fixed, and the upper part of the cylindrical shaft is inserted into the upper bearing part, so that the upper bearing part and the lower bearing The metal flag hinges are formed by connecting the parts on the same axis and in a state in which the plate-like members are rotatable, and between the opposing ends of the upper bearing part and the lower bearing part, A synthetic resin sliding member is disposed at least near the upper end and the lower end of the upper portion of the columnar shaft, and the metal members are in contact with each other via the sliding member. Dust prevention type flag hinge. [Selection] Figure 2

Description

  The present invention relates to a metal dust-proof flag hinge (hereinafter sometimes simply referred to as “flag hinge”). More specifically, the present invention relates to a dust prevention type flag hinge that can suppress the generation of metal dust even in long-term use.

  By using the metal hinge, metal members rub against each other to generate metal dust. For this reason, when air cleanliness is required in a clean room or when it is desired to prevent contamination of the surrounding environment, a dust prevention type hinge that suppresses the generation of metal dust is used.

  As such a dust prevention type hinge, for example, in Patent Document 1 proposed by the present inventor, a cylindrical synthetic resin sliding member having a flange portion between opposite ends of a bearing portion is proposed. There are metal hinges for clean rooms. This metal hinge can effectively prevent the generation of dust due to friction between metal members by interposing a sliding member between the metal members. It can be applied to all forms of hinges.

  However, as a result of further study of the present invention, when the above-described technique is applied to a hinge called a flag hinge, it may not be possible to stably prevent contact between metal members due to its structure. I understood it. More specifically, for example, when the above-described technique is applied to a hinge having three or more bearing portions such as a star-shaped hinge, the sliding member interposed between the shaft and the bearing portion is arranged at regular intervals. Since the distance between the shaft and the inner surface of the bearing portion is maintained stably, the contact between the metal members can be effectively prevented over a long period of time.

  On the other hand, when the above-described technique is applied to the flag hinge, one sliding member is installed at the central portion of the hinge to prevent contact between the shaft and the inner surface of the bearing portion. However, the flag hinge is composed of a plate-like member having an upper bearing portion formed on the side portion and a plate-like member having a lower bearing portion formed on the side portion by a shaft fixed to the lower bearing portion shaft. It has been found that there are the following problems because the bearings have a structure in which each bearing part is formed vertically long. In other words, flag hinges can be easily installed, so they are often used for heavy doors and large doors.In such cases, if a door with a flag hinge is used for a long time, the hinge is slightly Inclination sometimes occurred. In such a case, even if the above-described technique is used, contact between the shaft and the inner surface of the bearing portion cannot be completely prevented at the upper end portion of the shaft, and metal dust is generated due to wear of the member. There was room for improvement.

  On the other hand, dust-proof hinges are beginning to be used not only for industrial purposes but also for general households in order to prevent contamination of interior parts such as wallpaper, and various sizes and types are required. It is coming. For this reason, the dust prevention type hinges use ordinary hinges that have widely used variations, and make the design of the hinges as easy and inexpensive as possible without making excessive design changes. It is desirable that it can be produced.

Utility Model Registration No. 3127146

  Therefore, the object of the present invention is to provide a dust prevention type flag hinge that can effectively suppress the generation of metal dust even during long-term use and can be easily produced at low cost. There is to do.

  The above problems are solved by the following present invention. That is, in the present invention, a metal first plate-like member having an upper bearing portion formed on one side portion, a lower bearing portion formed on one side portion, and in the lower bearing portion, A second plate member made of metal in which the lower part of the cylindrical shaft is inserted and fixed, and the upper bearing part is inserted into the upper bearing part by inserting the upper part of the cylindrical shaft into the upper bearing part. It is a metal flag hinge formed by connecting the lower bearing portion on the same axis and the plate-like members in a rotatable state, and between the opposing ends of the upper bearing portion and the lower bearing portion. A sliding member made of synthetic resin is arranged at least near the upper end and near the lower end of the upper part of the cylindrical shaft, and the metal members are in contact with each other via the sliding member This is a dust prevention type flag hinge.

  In the flag hinge of the present invention, the sliding member is disposed between the opposing ends of the upper bearing portion and the lower bearing portion and in the entire area around the upper portion of the cylindrical shaft. In addition, the sliding member is located between the opposing ends of the upper bearing portion and the lower bearing portion, around the upper end of the upper portion of the cylindrical shaft, and near the lower end of the upper portion of the shaft. It can be set as the form arrange | positioned around.

  In addition, the flag hinge of the present invention has a side surface of the upper portion of the shaft extending from the upper end of the upper portion of the cylindrical shaft to a length direction of 0.5 to 5 mm within the upper bearing portion without being surrounded by the sliding member. It is preferable that the diameter of the shaft of the exposed portion is smaller than the diameter of the shaft of the portion surrounded by the sliding member. In addition, the flag hinge of the present invention preferably has a dynamic friction coefficient with respect to the steel of the sliding member in the range of 0.05 to 0.4.

  According to the present invention, there is provided a dust prevention type flag hinge having a high practical value that can effectively suppress the generation of metal dust even in long-term use and can be easily produced at low cost. Can do.

Hereinafter, the flag hinge 1 of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing an embodiment of a flag hinge 1 according to the present invention, and FIG. 2 is a cutaway view illustrating an embodiment of the flag hinge 1 according to the present invention (the inside of the upper bearing portion 12 is shown). It is. FIG. 3 is an exploded perspective view showing an embodiment of the flag hinge 1 of the present invention.

  The basic structure of the flag hinge 1 of the present invention has the same structure as that of a commonly used metal flag hinge, and is made of a metal first having an upper bearing portion 12 formed on one side. The plate-like member 11 and the lower bearing portion 22 are formed on one side, and the lower portion of the cylindrical shaft 31 is inserted and fixed in the lower bearing portion 22. The upper bearing portion 12 and the lower bearing portion 22 are placed on the same axis line by inserting the upper portion 32 of the cylindrical shaft 31 into the upper bearing portion 12. It is a thing of the structure formed by connecting the shape members (11, 12) in a rotatable state (see FIGS. 1 to 3).

  The feature of the flag hinge 1 of the present invention is that, as shown in FIG. 2 or FIG. 3, between the opposing ends of the upper bearing portion 12 and the lower bearing portion 22 and at least the vicinity of the upper end 32a of the upper portion 32 of the shaft. The sliding member 41 is arranged around the lower end vicinity 32 b, and metal members are in contact with each other via the sliding member 41.

  That is, the flag hinge 1 of the present invention is configured to dispose metal dust while maintaining the function as a hinge for a long time by arranging the sliding member 41 at a predetermined position of the basic metal flag hinge structure. It can be prevented. As a basic metal flag hinge, any conventionally known one can be used. In the present invention, as shown in FIG. 2, the upper end 32 c surface of the upper portion 32 of the columnar shaft 31 and the inner end surface of the upper bearing portion 12 (or the inner end surface of the lid 14) are not in contact with each other. For example, those formed or processed so as to be separated by about 1 to 5 mm can be preferably used.

  Moreover, in this invention, it can be set as embodiment which arrange | positioned the above-mentioned sliding member 41 in various aspects. For example, as shown in FIG. 2, an embodiment in which the sliding member 41 is arranged between the opposing ends of the upper bearing portion 12 and the lower bearing portion 22 and the entire area around the upper portion 32 of the shaft. Can be mentioned.

  The sliding member 41 used in this embodiment includes, for example, a cylindrical portion 42a and a flange portion 43a integrally formed at one end of the cylindrical portion 42a as shown in FIG. 2 or FIG. A long sliding member 41a having the same length as that of the upper portion 32 of the shaft can be used. The long sliding member 41a has, for example, the shaft upper portion 32 inserted into the cylinder from the flange portion 43a side, and the shaft upper portion 32 into which the shaft is inserted is inserted into the upper bearing portion 12. By doing so, it can be installed in a basic metal flag hinge (see FIG. 2 or FIG. 3). And as shown in FIG. 2, the cylindrical part 42a is arrange | positioned in the whole area | region of the periphery of the upper part 32 of a shaft, and the flange part 43a is arrange | positioned between the opposing edge parts of the upper bearing part 12 and the lower bearing part 22. It becomes.

  In addition, for example, as shown in FIG. 4 or FIG. 5, a short sliding member 41b composed of a cylindrical portion 42b and a flange portion 43b integrally formed at one end of the cylindrical portion 42b. One or two or more cylindrical sliding members 41c may be used in combination. Also in this case, the sliding members (41b, 41c) can be installed in the same manner as described above, and the cylindrical portion 42b and the cylindrical sliding member 41c are disposed in the entire area around the upper portion 32 of the shaft, The flange portion 43b is disposed between the opposing ends of the upper bearing portion 12 and the lower bearing portion 22.

  FIG. 6 is a cutaway view (the inside of the upper bearing portion 12 is shown) for explaining another embodiment of the flag hinge 1 of the present invention. FIG. 7 is an exploded perspective view showing another embodiment of the flag hinge 1 of the present invention. As shown in FIG. 6, for example, as shown in FIG. 6, the flag hinge 1 of the present invention has a sliding member 41 between the opposing ends of the upper bearing portion 12 and the lower bearing portion 22 and on the shaft. There is a form in which the portion 32 is arranged around the vicinity of the upper end 32a of the portion 32 and around the lower end portion 32b of the upper portion 32 of the shaft. In the present invention, “the vicinity of the upper end 32a” refers to any part on the upper side when the upper portion 32 of the shaft is divided into three equal parts in the length direction, and “the vicinity of the lower end 32b” In this case, it refers to any part on the lower side.

  In this embodiment, as the sliding member 41, for example, as shown in FIG. 6 or 7, a short sliding member comprising a cylindrical portion 42d and a flange portion 43d formed at one end of the cylindrical portion 42d. 41d and a cylindrical sliding member 41e can be used in combination. In this case, as shown in FIG. 6, a cylindrical sliding member 41e is installed in the vicinity of the upper end 32a of the upper portion 32 of the shaft. Further, the short sliding member 41d is arranged such that the cylindrical portion 42d is disposed in the vicinity of the lower end 32b of the upper portion 32 of the shaft, and the flange portion 43d is disposed between the end portions of the upper bearing portion 12 and the lower bearing portion 22. Let me install it.

  In the present invention, metal members are in contact with each other via the sliding member 41. This is because the sliding member 41 is interposed between the side surface of the upper portion 32 of the shaft and the inner side surface of the upper bearing portion 12 and between the opposing ends of the upper bearing portion 12 and the lower bearing portion 22 without any gap. It shows that you are doing. In order to interpose the sliding member 41 without any gap, the inner diameter of the cylindrical portion (cylindrical portion or cylindrical member) of the sliding member 41 and the diameter of the upper portion 32 of the shaft that the cylindrical portion surrounds are approximately the same. In addition, the outer diameter of the cylindrical portion is adjusted so that the inner diameter of the upper bearing portion 12 surrounding the cylindrical portion is approximately the same (see FIGS. 2, 4, and 5). Further, the length of the flange portion of the sliding member 41 is adjusted to be approximately the same as the distance between the opposing ends of the upper bearing portion 12 and the lower bearing portion 22 (see FIGS. 2, 4, and 5). . Moreover, it is preferable to adjust the width | variety of a flange part so that it may become comparable as the outer diameter of a bearing part (12, 22) as shown in FIG. 1 or FIG. In this case, “no gap” means that there is substantially no gap, and includes a gap that does not rattle the flag hinge, for example, a gap that is about 0.5 mm or less. . By arranging the sliding member 41 without any gaps in this way, it is possible not only to prevent the flag hinge from rattling over a long period of time and to be used in a stable state, but also to prevent the generation of metal dust. It becomes possible.

  In the case of the form shown in FIG. 6, the diameter of the shaft 31 in the portion surrounded by the cylindrical sliding member 41e is preferably smaller than the diameter of the upper portion 32 of the other shaft (see FIG. 7). ). By forming the shaft 31 in this manner, a cylindrical sliding member having an inner diameter larger than the diameter of the shaft 31 in the portion surrounded by the cylindrical sliding member 41e and smaller than the diameter of the upper portion 32 of the other shaft 31 is formed. When the moving member 41e is installed in the vicinity of the upper end 32a of the upper portion 32 of the shaft, the difference in diameter in the shaft 31 serves as a stopper for preventing the displacement of the cylindrical sliding member 41e. Further, since the cylindrical sliding member 41e is held in the above-described small diameter portion of the shaft 31, it can be inserted into the upper bearing portion 12 of the shaft 31, so that it becomes very easy to handle and the flag hinge 1 Assembling becomes simple.

  The various adjustments described above can also be performed by selecting the type of the sliding member 41 or the basic metal flag hinge. Moreover, it can also carry out by processing these. For example, the adjustment of the length of the sliding member 41 and the shaft 31 can be performed by cutting them. The inner and outer diameters of the bearing portions (12, 22) can be adjusted by rewinding the bearing portions (12, 22).

  In the present invention, the sliding member 41 surrounding the upper portion 32 of the shaft is preferably arranged so as to surround a region of 25% or more around the upper portion 32 of the shaft. In the present invention, for example, as shown in FIG. 8, when the sliding member 41 is disposed on the columnar shaft 31, a certain range (preferably from the upper end 32 c of the upper portion 32 of the shaft in the length direction) , 0.5 to 5 mm), the side surface of the shaft 31 may be exposed. In this case, the diameter of the exposed portion 32d is preferably smaller than the diameter of the other upper portion 32 of the shaft (see FIG. 8). By adopting such a configuration, contact between the upper end of the sliding member 41 and the inner end surface of the upper bearing portion 12 (or the inner end surface of the lid 14) can be suppressed, and the rotation performance of the hinge can be further improved. It will be possible to maintain a stable and stable state.

  On the other hand, in the form in which the periphery of the upper end 32c of the upper part of the shaft is not exposed, the sliding member 41 having a form in which one end of the cylindrical part is closed as shown in FIG. When the sliding member 41 of this form is used, the upper end 32c surface of the upper portion 32 of the shaft can be covered. That is, since the entire periphery of the upper end 32c of the upper part of the shaft, which is supposed to be in contact with each other, is surrounded by the sliding member 41, the contact between the metal members can be effectively prevented. Further, as shown in FIG. 9, each sliding member 41 to be used has an outer inclined surface 44 a formed at the upper end and an inner inclined surface 44 b formed at the lower end. This is preferable because less contact can be achieved.

  Further, the sliding member 41 having the above-described form may be bonded to a basic metal flag hinge within a range in which the rotation performance of the hinge is not hindered. For example, one side of the sliding member 41 can be bonded to the upper portion 32 of the shaft or the upper bearing portion 12.

  The above-described sliding member used in the present invention is made of synthetic resin and indicates a member having good sliding property and wear resistance. Examples of the synthetic resin to be used include polyethylene, polypropylene, polyacetal, polyamide, polyimide, polyamideimide, polyphenylene sulfide, or fluororesin. If necessary, additives such as lubricants, fillers, plasticizers, and colorants are blended. You may do it.

  In particular, the sliding member used in the present invention preferably has a dynamic friction coefficient with respect to steel in the range of 0.05 to 0.40. Even if it is less than 0.05, there is no particular problem, but since the versatility of the sliding member is lost, the flag hinge of the present invention produced using this may be expensive. On the other hand, if it exceeds 0.40, the slidability is inferior, and if such a member is used, the rotation performance of the flag hinge may deteriorate in durability, or the sliding member itself may wear out quickly. is there.

  Moreover, it is preferable that the sliding member used for this invention has the bending strength measured by DIN53452 (20 degreeC) in the range of 160-270 MPa. By using the sliding member within this range, it is possible to prevent the hinge from tilting or generating dust for a longer period of time.

  The sliding member having the above-described characteristics can be produced by a conventionally known method such as injection molding, but a commercially available one can also be used. Examples of commercially available products include the trade name “Beary (registered trademark)” manufactured by NTN, the product name “iglidur®” manufactured by igus®, and the like.

  The flag hinge of the present invention having the above-described configuration can be used by being attached to a door and a frame in the same manner as a general flag hinge. For example, it can be used by being attached to a door or a frame by passing screws through attachment holes (13, 23) formed on the surface of the plate-like members (11, 21). Further, the flag hinge of the present invention may be in any form as long as it is a flag hinge, and may be a so-called face-on flag hinge (see FIG. 10).

Next, an example is given and the present invention is explained still in detail.
[Manufacture of flag hinges]
A general-purpose metal flag hinge (product name: stainless steel flag hinge 222-127, material SUS304, manufactured by Suehiro Metal Co., Ltd., bearing inner diameter 14 mm, shaft diameter 14 mm) is prepared, and the upper bearing portion and the cylindrical shaft are After separating into a fixed lower bearing part, the upper part of the shaft was cut so as to have a columnar shape with a length of 50 mm and a diameter of 12 mm. Next, the sliding member 1 comprising a flange portion and a cylindrical portion (trade name: iglidur® GFM-1214-24, manufactured by Igus®, length 25 mm (including the flange portion), outer diameter of the cylindrical portion 14 mm, inner diameter 12 mm, Prepare one flange member (outer diameter 20 mm) and one cylindrical sliding member 2 (trade name: iglidur® GSM-1214-25, manufactured by igus®, length 25 mm, outer diameter 14 mm, inner diameter 12 mm) These were respectively inserted into the upper part of the shaft and installed, and then the lower bearing part and the upper bearing part were connected to obtain the flag hinge of the example. Each sliding member used had a bending strength (20 ° C.) of 210 MPa according to test method DIN53452 and a dynamic friction coefficient (μ) with respect to steel steel of 0.12.

  In the flag hinge of the embodiment thus obtained, the flange portion of the sliding member 1 is sandwiched between the opposing ends of the upper bearing portion and the lower bearing portion, and the shaft and The cylindrical portions of the sliding members 1 and 2 are sandwiched between the inner surface of the upper bearing portion (see FIG. 5).

[test]
The test door (width 900 mm × height 2500 mm) was installed on the test frame using the three flag hinges of the example obtained above (see FIG. 11). Next, the test door to which the flag hinge of the example was attached was repeatedly opened and closed to check the worn state of the hinge. The weight of the test door was 77 kg, the opening / closing speed of the test door was set to 8 times / minute, and the opening angle of the test door was set to 80 °. In addition, the number of times the test door was opened and closed was set to be “open → close” from the state where the test door was closed.

  In addition, confirmation of the abrasion state of the hinge was performed by measuring the following. First, with the test door closed, measure the top / bottom / left / right (A to D in FIG. 11) dust width (gap between the test door and the test frame) on the side of the test door where the hinge is not installed. The value was used as a reference value. The measurement position of the chile width was set to a position 50 mm from the top, bottom, left and right ends of the test door. Next, the opening and closing operation of the test door was repeated, and when the number of times of opening and closing reached a predetermined number, the opening and closing operation was stopped, and the dust width was measured by the same method as above. In addition, the door opening / closing force at that time was also measured. The obtained measurement results are shown in Table 1.

  As shown in Table 1, it was found that even after the number of opening / closing operations of 500,000, the Chile width hardly changed from the reference value, and the opening / closing force hardly changed. As a result, it was confirmed that the hinge and the test door were not tilted and the hinge was not worn. Further, after the number of opening and closing reached 500,000 times, the flag hinge used in the test was visually confirmed, and no dirt such as metal dust was found. That is, from the above test results, it was confirmed that the flag hinges of the examples were excellent in preventing the generation of metal dust over a long period of time.

  ADVANTAGE OF THE INVENTION According to this invention, generation | occurrence | production of metal dust can be suppressed over a long period of time, Furthermore, the dust prevention type | mold flag hinge with high practical value which can be produced simply and at low cost can be provided. In addition, this flag hinge is applicable to various sizes and shapes by applying a general-purpose synthetic resin sliding member used in many applications such as equipment and machinery to a general-purpose metal flag hinge. Will be. Therefore, the flag hinge of the present invention is ideal as a dust-proof flag hinge for use in various types of doors in clean rooms where air cleanliness is required and other places where the surrounding environment is not to be polluted. is there.

It is a perspective view which shows one Embodiment of the flag hinge of this invention. It is a partially cutaway figure explaining the inside of the structure of the flag hinge of this invention. It is a disassembled perspective view which shows one Embodiment of the flag hinge of this invention. It is a partially cutaway figure explaining the inside of the structure of the flag hinge of this invention. It is a partially cutaway figure explaining the inside of the structure of the flag hinge of this invention. It is a partially cutaway figure explaining the inside of the structure of the flag hinge of this invention. It is a disassembled perspective view which shows other embodiment of the flag hinge of this invention. It is a partially cutaway figure explaining the inside of the structure of the flag hinge of this invention. It is a perspective view which shows an example of the sliding member which can be used for this invention. It is a perspective view which shows other embodiment of the flag hinge of this invention. It is drawing explaining the measuring method of the flag hinge of this invention.

Explanation of symbols

1: Dust prevention type flag hinge 11: First plate member 12: Upper bearing portion 13: Mounting hole 14: Lid 21: Second plate member 22: Lower bearing portion 23: Mounting hole 31: Shaft 32: Shaft Upper portion 32a: Near upper end of upper portion of shaft 32b: Near lower end of upper portion of shaft 32c: Upper end of upper portion of shaft 32d: Exposed portion of upper portion of shaft 41: Sliding member 42: Cylindrical portion 43: Flange 44: Inclined surface 45: Blocking surface 51: Test door 52: Test frame

Claims (7)

  A metal first plate-like member having an upper bearing portion formed on one side, a lower bearing portion formed on one side, and a lower part of a cylindrical shaft in the lower bearing portion. A second plate member made of metal with a portion inserted and fixed, and by inserting the upper part of the cylindrical shaft into the upper bearing part, the upper bearing part and the lower bearing part are connected to the same shaft. It is a metal flag hinge formed by connecting plate-like members in a rotatable state on a line, between the opposing ends of the upper bearing portion and the lower bearing portion, and a cylindrical shaft Dust prevention characterized in that a synthetic resin sliding member is disposed at least near the upper end and around the lower end of the upper portion, and metal members are in contact with each other via the sliding member Type flag hinge.   2. The dust-preventing flag hinge according to claim 1, wherein the sliding member is disposed between opposing ends of the upper bearing portion and the lower bearing portion and in the entire area around the upper portion of the cylindrical shaft. .   The sliding member has a form including a cylindrical portion and a flange portion integrally formed at one end of the cylindrical portion, and the cylindrical portion is disposed around an upper portion of a columnar shaft, and the flange The dust-preventing flag hinge according to claim 2, wherein the portion is disposed between opposite ends of the upper bearing portion and the lower bearing portion.   The sliding member is composed of two or more members, a sliding member composed of a cylindrical portion and a flange portion integrally formed at one end of the cylindrical portion, and a cylindrical sliding member, and the cylindrical portion and The cylindrical sliding member is disposed around an upper portion of a columnar shaft, and the flange portion is disposed between opposing ends of the upper bearing portion and the lower bearing portion. Dust prevention flag hinge.   Sliding members are disposed between the opposing ends of the upper bearing portion and the lower bearing portion, around the upper end of the upper portion of the cylindrical shaft, and around the lower end of the upper portion of the shaft. The dust-proof flag hinge according to claim 1.   The side surface of the upper part of the shaft is exposed in the upper bearing part without being surrounded by the sliding member from the upper end of the upper part of the cylindrical shaft to the length direction of 0.5 to 5 mm. The dust prevention type flag hinge according to any one of claims 1 to 5, wherein a diameter of the shaft of the protruding portion is formed smaller than a diameter of the shaft of the portion surrounded by the sliding member.   The dust prevention type flag hinge according to any one of claims 1 to 6, wherein a coefficient of dynamic friction of the sliding member with respect to steel is in a range of 0.05 to 0.4.

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